Is equal sized color bars not implemented yet in pygmt?

This might be answered with a plain “yes, it’s not yet”, but I just want to make sure it is right. I do not see the option to make equal sized color bars in the documentation, although it briefly mentions it in the beginning of the paragraph. Basically I want to mimic the -L flag of colorbar in pygmt. Is this not well documented, or just absent for the time being?

Thanks!